Waterproof endoscope

Details Waterproof endoscope Waterproof endoscope

1984-04-30

1985-10-08

Grieb, William H.

Surgery

Truss

Perineal

A61B 106

Patent

active

045453691

ABSTRACT:
A waterproof endoscope includes a insertion tube adapted to be inserted into a hollow organ. A hollow housing is connected to the insertion tube in an air-tight manner and disposed in communication therewith, the housing having an aperture formed therethrough. Mounted on the housing is a valve which includes a valve element for normally closing the aperture in the housing, and a spring made of a marmen alloy which is returned to a preselected shape at a predetermined temperature so as to urge the valve element away from the aperture, thereby opening the valve.

REFERENCES:
patent: 4216767 (1980-08-01), Aoshiro
patent: 4241729 (1980-12-01), Aoshiro
patent: 4341205 (1982-07-01), Hosono et al.
patent: 4367730 (1983-01-01), Tanaka

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